Description

In the Linux kernel, the following vulnerability has been resolved: usb: rndis_host: Secure rndis_query check against int overflow Variables off and len typed as uint32 in rndis_query function are controlled by incoming RNDIS response message thus their value may be manipulated. Setting off to a unexpectetly large value will cause the sum with len and 8 to overflow and pass the implemented validation step. Consequently the response pointer will be referring to a location past the expected buffer boundaries allowing information leakage e.g. via RNDIS_OID_802_3_PERMANENT_ADDRESS OID.

References 8

• git.kernel.org https://git.kernel.org/stable/c/02ffb4ecf0614c58e3d0e5bfbe99588c9ddc77c0
• git.kernel.org https://git.kernel.org/stable/c/11cd4ec6359d90b13ffb8f85a9df8637f0cf8d95
• git.kernel.org https://git.kernel.org/stable/c/232ef345e5d76e5542f430a29658a85dbef07f0b
• git.kernel.org https://git.kernel.org/stable/c/39eadaf5611ddd064ad1c53da65c02d2b0fe22a4
• git.kernel.org https://git.kernel.org/stable/c/55782f6d63a5a3dd3b84c1e0627738fc5b146b4e
• git.kernel.org https://git.kernel.org/stable/c/a713602807f32afc04add331410c77ef790ef77a
• git.kernel.org https://git.kernel.org/stable/c/c7dd13805f8b8fc1ce3b6d40f6aff47e66b72ad2
• git.kernel.org https://git.kernel.org/stable/c/ebe6d2fcf7835f98cdbb1bd5e0414be20c321578

Remediation